/* roulang page: index */
:root{
  --dy:#E9B949;
  --dy-dark:#D8A63A;
  --shell:#2F4634;
  --shell-2:#3B5540;
  --spine:#6E7A55;
  --flesh:#C97B3A;
  --bg:#FBF8F1;
  --card:#FFFFFF;
  --text:#211D17;
  --muted:#5C564B;
  --line:#E7E0D2;
  --ok:#4E7A46;
  --r-lg:18px;
  --r-md:14px;
  --r-sm:11px;
  --sh:0 1px 2px rgba(33,29,23,.06),0 10px 24px rgba(33,29,23,.08);
  --sh-h:0 2px 4px rgba(33,29,23,.08),0 18px 36px rgba(33,29,23,.14);
  --sec:96px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16.5px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
a:hover{color:var(--flesh)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:800;letter-spacing:-.01em}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(233,185,73,.9);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec) 0}
.section--tight{padding:72px 0}
.section--board{background:var(--shell);color:#F4EFE3}
.section--board h2,.section--board h3{color:#fff}
.section-head{max-width:780px;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,2.8vw,34px);margin:12px 0 14px}
.section-head p{color:var(--muted)}
.section--board .section-head p{color:rgba(244,239,227,.78)}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13.5px;font-weight:700;letter-spacing:.1em;color:var(--flesh)}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--dy);display:block}
.section--board .eyebrow{color:var(--dy)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-sm);
  font-weight:700;font-size:16px;border:1px solid transparent;cursor:pointer;
  transition:background .22s ease,color .22s ease,transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--dy);color:#211D17;box-shadow:0 6px 16px rgba(233,185,73,.28)}
.btn-primary:hover{background:var(--dy-dark);color:#211D17;transform:translateY(-1px) scale(1.01)}
.btn-ghost{border-color:rgba(47,70,52,.42);color:var(--shell);background:transparent}
.btn-ghost:hover{background:var(--shell);color:#fff;border-color:var(--shell)}
.btn-light{border-color:rgba(251,248,241,.55);color:#FBF8F1;background:rgba(251,248,241,.1)}
.btn-light:hover{background:#FBF8F1;color:var(--shell);border-color:#FBF8F1}
.btn-block{width:100%}
.textlink{color:var(--flesh);font-weight:700;font-size:15px;display:inline-flex;align-items:center;gap:6px}
.textlink:hover{color:var(--dy-dark);text-decoration:underline}
.chip{position:absolute;top:14px;left:14px;z-index:3;background:rgba(251,248,241,.95);border:1px solid rgba(47,70,52,.22);color:var(--shell);font-size:12.5px;font-weight:700;padding:4px 11px;border-radius:999px}
.chip--gold{background:var(--dy);border-color:var(--dy-dark);color:#211D17}
.chip-static{display:inline-flex;align-items:center;gap:6px;background:rgba(233,185,73,.16);border:1px solid rgba(233,185,73,.55);color:var(--dy);font-size:12.5px;font-weight:700;padding:4px 11px;border-radius:999px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,248,241,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}
.brand{display:inline-flex;align-items:center;gap:11px;font-size:20px;font-weight:800;color:var(--shell);letter-spacing:.01em}
.brand:hover{color:var(--shell)}
.brand-mark{display:inline-flex;width:38px;height:38px;flex:0 0 auto}
.brand-text small{display:block;font-size:11.5px;font-weight:600;color:var(--spine);letter-spacing:.16em;line-height:1.2}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-menu a{
  display:inline-flex;align-items:center;min-height:44px;padding:0 14px;
  font-size:15.5px;font-weight:600;color:var(--muted);border-radius:10px;
  transition:color .2s ease,background .2s ease;
}
.nav-menu a:hover{color:var(--shell);background:rgba(47,70,52,.06)}
.nav-menu a.is-active{color:var(--shell);background:rgba(233,185,73,.22);font-weight:800}
.nav-cta{display:inline-flex;align-items:center}
.nav-toggle{
  display:none;width:46px;height:46px;border:1px solid rgba(47,70,52,.28);border-radius:12px;
  background:#fff;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--shell);border-radius:2px;transition:.24s}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;color:#FBF8F1;background:var(--shell)}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.04)}
.hero-veil{position:absolute;inset:0;background:linear-gradient(102deg,rgba(22,34,24,.95) 0%,rgba(22,34,24,.88) 44%,rgba(22,34,24,.62) 100%)}
.hero-wrap{position:relative;padding-top:84px;padding-bottom:0}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:48px;align-items:start}
.hero-badge{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(233,185,73,.6);background:rgba(233,185,73,.12);color:var(--dy);font-size:13.5px;font-weight:700;padding:6px 14px;border-radius:999px}
.hero-copy h1{font-size:clamp(30px,4.2vw,48px);line-height:1.24;font-weight:800;margin:20px 0 18px;color:#fff}
.hero-lead{font-size:16.5px;line-height:1.8;color:rgba(251,248,241,.86);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-panel{
  background:rgba(20,32,22,.62);
  border:1px solid rgba(233,185,73,.34);
  border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-h);
}
.panel-title{font-size:17px;font-weight:800;color:#fff;margin:0 0 4px}
.panel-sub{font-size:14px;color:rgba(251,248,241,.66);margin:0 0 16px}
.hero-list{display:grid;gap:12px;margin-bottom:18px}
.hero-list li{display:flex;gap:12px;align-items:center;padding:10px;border-radius:12px;background:rgba(251,248,241,.06);border:1px solid rgba(251,248,241,.1)}
.hero-list img{width:88px;height:52px;object-fit:cover;border-radius:9px;flex:0 0 auto;background:#3B5540}
.hero-list strong{display:block;font-size:15px;color:#fff;font-weight:700;line-height:1.4}
.hero-list span{font-size:13px;color:rgba(251,248,241,.62)}
.hero-metrics{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid rgba(251,248,241,.2);margin-top:48px}
.hero-metrics div{padding:22px 18px;border-right:1px solid rgba(251,248,241,.14)}
.hero-metrics div:last-child{border-right:0}
.hero-metrics b{display:block;font-size:clamp(24px,2.6vw,32px);font-weight:800;color:var(--dy);font-variant-numeric:tabular-nums;line-height:1.1}
.hero-metrics b em{font-style:normal;font-size:15px;font-weight:600;color:rgba(251,248,241,.75);margin-left:5px}
.hero-metrics p{margin:8px 0 0;font-size:14px;color:rgba(251,248,241,.7)}

/* ---------- board ---------- */
.board-grid{margin-top:8px}
.board-stat{
  background:rgba(251,248,241,.05);
  border:1px solid rgba(251,248,241,.22);
  border-radius:var(--r-md);
  padding:24px 18px;
  margin-bottom:22px;
  height:calc(100% - 22px);
  transition:border-color .22s ease,background .22s ease;
}
.board-stat:hover{border-color:rgba(233,185,73,.7);background:rgba(251,248,241,.09)}
.board-num{font-size:clamp(28px,3.4vw,42px);font-weight:800;color:var(--dy);font-variant-numeric:tabular-nums;line-height:1.05}
.board-num em{font-style:normal;font-size:15px;font-weight:600;color:rgba(244,239,227,.7);margin-left:5px}
.board-stat p{margin:10px 0 0;font-size:14px;line-height:1.6;color:rgba(244,239,227,.76)}

/* ---------- cards ---------- */
.card{
  position:relative;background:var(--card);
  border:1px solid rgba(47,70,52,.2);
  border-radius:var(--r-lg);
  box-shadow:var(--sh);overflow:hidden;
  display:flex;flex-direction:column;height:calc(100% - 24px);
  margin-bottom:24px;
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--dy);z-index:2}
.card--green::before{background:var(--shell)}
.card--orange::before{background:var(--flesh)}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:var(--dy)}
.card-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:#F1EBDD}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.card:hover .card-cover img{transform:scale(1.05)}
.card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:20px}
.card-body p{color:var(--muted);font-size:15.5px;line-height:1.7}
.card-foot{margin-top:auto;padding-top:6px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.tagrow{display:flex;flex-wrap:wrap;gap:8px}
.tag{font-size:12.5px;font-weight:700;padding:4px 11px;border-radius:999px;background:rgba(110,122,85,.14);color:var(--spine);border:1px solid rgba(110,122,85,.26)}
.tag--gold{background:rgba(233,185,73,.2);border-color:rgba(233,185,73,.55);color:#8A6412}
.tag--orange{background:rgba(201,123,58,.14);border-color:rgba(201,123,58,.4);color:#95531F}
.card--feature{background:linear-gradient(160deg,#FFFDF7 0%,#FBF4E2 100%)}
.card--feature .card-body h3{font-size:24px}

/* ---------- rail ---------- */
.rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 4px 22px;margin:0 -4px}
.rail::-webkit-scrollbar{height:8px}
.rail::-webkit-scrollbar-track{background:rgba(47,70,52,.08);border-radius:99px}
.rail::-webkit-scrollbar-thumb{background:rgba(47,70,52,.32);border-radius:99px}
.rail-card{
  flex:0 0 clamp(250px,29vw,320px);scroll-snap-align:start;background:#fff;
  border:1px solid rgba(47,70,52,.18);border-radius:var(--r-md);overflow:hidden;
  box-shadow:var(--sh);transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:var(--dy)}
.rail-card .card-cover{aspect-ratio:16/10}
.rail-card .rail-body{padding:16px 18px 20px}
.rail-card h3{font-size:17.5px;margin-bottom:8px}
.rail-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13.5px;color:var(--muted)}

/* ---------- compare ---------- */
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.compare-item{background:#fff;border:1px solid rgba(47,70,52,.16);border-radius:var(--r-md);padding:22px;box-shadow:var(--sh)}
.compare-item h3{font-size:18px;margin-bottom:16px}
.compare-line{display:grid;grid-template-columns:88px 1fr 84px;align-items:center;gap:12px;margin-bottom:12px}
.compare-line span{font-size:13.5px;color:var(--muted);font-weight:600}
.compare-line b{font-size:15px;font-weight:800;text-align:right;font-variant-numeric:tabular-nums;color:var(--shell)}
.bar{height:12px;border-radius:99px;background:#EFE9DC;overflow:hidden}
.bar i{display:block;height:100%;border-radius:99px;background:var(--spine);transition:width .6s ease}
.compare-line.is-brand .bar i{background:var(--dy)}
.compare-line.is-brand b{color:var(--flesh)}

/* ---------- scenes ---------- */
.scene-card{background:#fff;border:1px solid rgba(47,70,52,.16);border-radius:var(--r-md);padding:22px;height:calc(100% - 24px);margin-bottom:24px;box-shadow:var(--sh);transition:transform .24s ease,border-color .24s ease}
.scene-card:hover{transform:translateY(-3px);border-color:var(--dy)}
.scene-card h3{font-size:18px;margin-bottom:10px}
.scene-card p{color:var(--muted);font-size:15px}
.scene-icon{width:44px;height:44px;border-radius:12px;background:rgba(233,185,73,.2);color:#8A6412;display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;margin-bottom:14px}

/* ---------- timeline ---------- */
.timeline{position:relative;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:0;margin-top:12px}
.timeline::before{content:"";position:absolute;top:15px;left:4%;right:4%;height:2px;background:repeating-linear-gradient(90deg,rgba(47,70,52,.32) 0 9px,transparent 9px 18px)}
.tl-node{position:relative;padding:0 16px}
.tl-dot{position:relative;z-index:2;width:16px;height:16px;border-radius:50%;background:var(--dy);border:4px solid var(--bg);box-shadow:0 0 0 2px var(--shell);margin-bottom:18px}
.tl-node h3{font-size:17px;margin-bottom:8px}
.tl-node span{display:inline-block;font-size:13px;font-weight:700;color:var(--spine);margin-bottom:8px}
.tl-node p{font-size:14.5px;color:var(--muted)}

/* ---------- rank ---------- */
.rank-list{background:#fff;border:1px solid rgba(47,70,52,.16);border-radius:var(--r-lg);box-shadow:var(--sh);overflow:hidden}
.rank-row{display:flex;align-items:center;gap:18px;padding:15px 20px;border-bottom:1px solid var(--line);transition:background .2s ease}
.rank-row:last-child{border-bottom:0}
.rank-row:hover{background:#F6F0E3}
.rank-no{font-size:32px;font-weight:800;color:var(--dy);font-variant-numeric:tabular-nums;min-width:48px;line-height:1}
.rank-thumb{width:112px;aspect-ratio:16/9;border-radius:10px;overflow:hidden;flex:0 0 auto;background:#EFE9DC}
.rank-thumb img{width:100%;height:100%;object-fit:cover}
.rank-text{flex:1;min-width:0}
.rank-text h3{font-size:17px;margin-bottom:6px}
.rank-meta{font-size:13.5px;color:var(--muted)}

/* ---------- news ---------- */
.news-item{display:flex;gap:18px;padding:18px 0;border-bottom:1px solid var(--line)}
.news-item:first-child{padding-top:0}
.news-thumb{width:172px;aspect-ratio:16/9;border-radius:12px;overflow:hidden;flex:0 0 auto;background:#EFE9DC}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-text h3{font-size:18px;margin-bottom:8px}
.news-text p{color:var(--muted);font-size:15px}
.news-date{font-size:13.5px;color:var(--spine);font-variant-numeric:tabular-nums;font-weight:600}
.side-card{background:#fff;border:1px solid rgba(47,70,52,.16);border-radius:var(--r-md);padding:20px;box-shadow:var(--sh);margin-bottom:20px}
.side-card h3{font-size:17px;margin-bottom:12px}
.side-list li{padding:10px 0;border-bottom:1px dashed var(--line);font-size:15px;color:var(--muted)}
.side-list li:last-child{border-bottom:0}

/* ---------- guarantee / devices / voices / quick ---------- */
.mini-card{background:#fff;border:1px solid rgba(47,70,52,.18);border-radius:var(--r-md);padding:22px;height:calc(100% - 24px);margin-bottom:24px;transition:border-color .22s ease,transform .22s ease}
.mini-card:hover{border-color:var(--dy);transform:translateY(-3px)}
.mini-card h3{font-size:17.5px;margin-bottom:8px}
.mini-card p{font-size:14.8px;color:var(--muted)}
.mini-icon{width:40px;height:40px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;background:rgba(110,122,85,.16);color:var(--shell);font-weight:800;margin-bottom:14px}
.device-shape{height:66px;border-radius:12px;border:2px solid rgba(47,70,52,.3);background:linear-gradient(180deg,rgba(233,185,73,.14),rgba(47,70,52,.06));margin-bottom:16px;position:relative}
.device-shape::after{content:"";position:absolute;left:50%;bottom:7px;transform:translateX(-50%);width:26px;height:3px;border-radius:3px;background:rgba(47,70,52,.28)}
.device-shape.is-wide{border-radius:8px}
.voice-card{background:#fff;border:1px solid rgba(47,70,52,.16);border-radius:var(--r-md);padding:22px;height:calc(100% - 24px);margin-bottom:24px;box-shadow:var(--sh);display:flex;flex-direction:column;gap:14px;transition:transform .24s ease,border-color .24s ease}
.voice-card:hover{transform:translateY(-3px);border-color:var(--dy)}
.voice-card blockquote{margin:0;font-size:15px;color:var(--text);line-height:1.75}
.voice-foot{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--muted)}
.avatar{width:34px;height:34px;border-radius:50%;background:var(--shell);color:var(--dy);display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:14px}
.quick-card{background:#fff;border:1px solid rgba(47,70,52,.16);border-left:4px solid var(--dy);border-radius:var(--r-sm);padding:20px;height:calc(100% - 24px);margin-bottom:24px}
.quick-card h3{font-size:16.5px;margin-bottom:10px}
.quick-card p{font-size:14.8px;color:var(--muted)}

/* ---------- accordion ---------- */
.accordion{border:0;background:transparent}
.accordion .accordion-item{border:1px solid rgba(47,70,52,.18);border-radius:var(--r-sm);background:#fff;margin-bottom:14px;overflow:hidden;box-shadow:0 1px 2px rgba(33,29,23,.04)}
.accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;min-height:52px;font-size:17px;font-weight:700;color:var(--text);
  border:0;background:#fff;transition:background .2s ease,color .2s ease;
}
.accordion .accordion-title:hover{background:#F8F3E7;color:var(--shell)}
.accordion .accordion-title::before{content:"";position:absolute;right:22px;top:50%;width:10px;height:10px;border-right:2px solid var(--spine);border-bottom:2px solid var(--spine);transform:translateY(-70%) rotate(45deg);transition:transform .24s ease}
.accordion .accordion-content{padding:0 22px 20px;border:0;color:var(--muted);font-size:15.5px;background:#fff}
.accordion .accordion-content p{font-size:15.5px;color:var(--muted)}
.accordion .accordion-item.is-active .accordion-title{background:#FBF4E2;color:var(--shell)}
.accordion .accordion-item.is-active .accordion-title::before{transform:translateY(-20%) rotate(-135deg)}

/* ---------- changelog ---------- */
.log-row{display:flex;gap:22px;padding:15px 0;border-bottom:1px dashed var(--line);align-items:baseline}
.log-row:last-child{border-bottom:0}
.log-date{font-variant-numeric:tabular-nums;font-weight:800;color:var(--flesh);min-width:104px;font-size:15px}
.log-row p{font-size:15.5px;color:var(--muted)}

/* ---------- form ---------- */
.form-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:48px;align-items:start}
.form-card{background:#fff;border:1px solid rgba(47,70,52,.18);border-radius:var(--r-lg);padding:30px;box-shadow:var(--sh)}
.field{margin-bottom:16px}
.field label{display:block;font-size:14.5px;font-weight:700;margin-bottom:8px;color:var(--shell)}
.field input,.field select,.field textarea{
  width:100%;border:1px solid #DDD5C4;border-radius:12px;padding:12px 14px;
  background:#FDFBF6;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{min-height:104px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--dy);box-shadow:0 0 0 3px rgba(233,185,73,.28);background:#fff}
.form-hint{font-size:13.5px;color:var(--muted);margin-top:12px}
.form-msg{display:none;margin-top:14px;padding:12px 16px;border-radius:12px;background:rgba(78,122,70,.12);border:1px solid rgba(78,122,70,.4);color:#3A5D35;font-size:15px}
.form-msg.is-visible{display:block}
.check-list li{position:relative;padding-left:26px;margin-bottom:12px;color:var(--muted);font-size:15.5px}
.check-list li::before{content:"";position:absolute;left:0;top:9px;width:12px;height:7px;border-left:2px solid var(--dy);border-bottom:2px solid var(--dy);transform:rotate(-45deg)}

/* ---------- closing cta ---------- */
.cta-bar{
  background:var(--shell);color:#FBF8F1;border-radius:20px;
  padding:36px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:var(--sh-h);
}
.cta-bar h2{font-size:clamp(20px,2.3vw,26px);color:#fff;max-width:720px}
.cta-bar p{margin:10px 0 0;color:rgba(251,248,241,.75);font-size:15.5px}

/* ---------- footer ---------- */
.site-footer{background:#243726;color:#E7E1D3;padding:66px 0 26px;margin-top:0}
.footer-brand .brand{color:#FBF8F1;font-size:21px;margin-bottom:14px}
.footer-brand .brand:hover{color:var(--dy)}
.footer-brand p{color:rgba(231,225,211,.72);font-size:15px;max-width:360px}
.footer-col h4{font-size:16px;color:#fff;margin-bottom:16px;font-weight:800}
.footer-col li{margin-bottom:10px}
.footer-col a{color:rgba(231,225,211,.78);font-size:15px;border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease}
.footer-col a:hover{color:var(--dy);border-bottom-color:var(--dy)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(231,225,211,.16);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  color:rgba(231,225,211,.62);font-size:14px;
}
.footer-bottom a{color:rgba(231,225,211,.72)}
.footer-bottom a:hover{color:var(--dy)}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  :root{--sec:76px}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:36px}
  .hero-panel{max-width:640px}
  .timeline{grid-template-columns:repeat(3,minmax(0,1fr));gap:26px 0}
  .timeline::before{display:none}
  .tl-node{padding:0 12px;border-left:2px dashed rgba(47,70,52,.28)}
  .tl-dot{margin-left:-8px}
  .compare-grid{grid-template-columns:minmax(0,1fr)}
  .form-layout{grid-template-columns:minmax(0,1fr);gap:32px}
}
@media (max-width:960px){
  .nav-toggle{display:inline-flex}
  .nav-menu{
    position:fixed;top:72px;left:0;right:0;background:#FBF8F1;
    border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;
    padding:14px 24px 24px;gap:2px;max-height:calc(100vh - 72px);overflow:auto;
    transform:translateY(-14px);opacity:0;pointer-events:none;
    transition:opacity .24s ease,transform .24s ease;
    box-shadow:0 18px 30px rgba(33,29,23,.1);
  }
  .nav-menu.is-open{transform:none;opacity:1;pointer-events:auto}
  .nav-menu a{padding:14px 6px;border-bottom:1px solid var(--line);border-radius:0;font-size:16.5px;min-height:52px}
  .nav-menu a.is-active{background:transparent;color:var(--flesh)}
  .nav-cta{display:none}
  .hero-wrap{padding-top:56px}
  .hero-metrics{grid-template-columns:repeat(2,1fr);margin-top:34px}
  .hero-metrics div:nth-child(2){border-right:0}
  .hero-metrics div:nth-child(1),.hero-metrics div:nth-child(2){border-bottom:1px solid rgba(251,248,241,.14)}
}
@media (max-width:768px){
  :root{--sec:60px}
  body{font-size:16px}
  .container{padding:0 18px}
  .section-head{margin-bottom:30px}
  .timeline{grid-template-columns:minmax(0,1fr);gap:22px}
  .rank-row{gap:12px;padding:14px 14px;flex-wrap:wrap}
  .rank-no{font-size:26px;min-width:34px}
  .rank-thumb{width:96px}
  .news-item{flex-direction:column;gap:12px}
  .news-thumb{width:100%;aspect-ratio:16/9}
  .cta-bar{padding:28px 24px;border-radius:16px}
  .log-row{flex-direction:column;gap:4px}
  .log-date{min-width:0}
  .compare-line{grid-template-columns:74px 1fr 72px;gap:8px}
}
@media (max-width:520px){
  :root{--sec:48px}
  .hero-copy h1{font-size:28px}
  .hero-actions .btn{width:100%}
  .hero-metrics{grid-template-columns:minmax(0,1fr)}
  .hero-metrics div{border-right:0;border-bottom:1px solid rgba(251,248,241,.14);padding:16px 12px}
  .hero-metrics div:last-child{border-bottom:0}
  .board-stat{height:auto;margin-bottom:16px}
  .card-body h3{font-size:18.5px}
  .rail-card{flex:0 0 84%}
  .form-card{padding:22px}
  .accordion .accordion-title{padding:15px 16px;font-size:15.8px}
  .accordion .accordion-content{padding:0 16px 18px}
}

/* roulang page: category1 */
:root{
 --dy:#E9B949;
 --dy-dark:#D8A63A;
 --shell:#2F4634;
 --shell-2:#3B5540;
 --spine:#6E7A55;
 --flesh:#C97B3A;
 --bg:#FBF8F1;
 --card:#FFFFFF;
 --text:#211D17;
 --muted:#5C564B;
 --line:#E7E0D2;
 --ok:#4E7A46;
 --r-lg:18px;
 --r-md:14px;
 --r-sm:11px;
 --sh:0 1px 2px rgba(33,29,23,.06),0 10px 24px rgba(33,29,23,.08);
 --sh-h:0 2px 4px rgba(33,29,23,.08),0 18px 36px rgba(33,29,23,.14);
 --sec:96px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
 margin:0;
 font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
 background:var(--bg);
 color:var(--text);
 font-size:16.5px;
 line-height:1.75;
 -webkit-font-smoothing:antialiased;
 overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
a:hover{color:var(--flesh)}
button,input,select,textarea{font:inherit;color:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(233,185,73,.9);outline-offset:2px;border-radius:8px}
h1,h2,h3,h4{line-height:1.3;margin:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec) 0}
.section--tight{padding:72px 0}
.section--board{background:var(--shell);color:#F4EFE3}
.section--board h2,.section--board h3{color:#fff}
.section-head{max-width:820px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,2.8vw,34px);margin:12px 0 14px}
.section-head p{color:var(--muted)}
.section--board .section-head p{color:rgba(244,239,227,.78)}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13.5px;font-weight:700;letter-spacing:.1em;color:var(--flesh)}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--dy);display:block}
.section--board .eyebrow{color:var(--dy)}

/* ---------- buttons / chips ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 min-height:46px;padding:0 22px;border-radius:var(--r-sm);
 font-weight:700;font-size:16px;border:1px solid transparent;cursor:pointer;
 transition:background .22s ease,color .22s ease,transform .22s ease,border-color .22s ease,box-shadow .22s ease;
 white-space:nowrap;
}
.btn-primary{background:var(--dy);color:#211D17;box-shadow:0 6px 16px rgba(233,185,73,.28)}
.btn-primary:hover{background:var(--dy-dark);color:#211D17;transform:translateY(-1px) scale(1.01)}
.btn-ghost{border-color:rgba(47,70,52,.42);color:var(--shell);background:transparent}
.btn-ghost:hover{background:var(--shell);color:#fff;border-color:var(--shell)}
.btn-light{border-color:rgba(251,248,241,.55);color:#FBF8F1;background:rgba(251,248,241,.1)}
.btn-light:hover{background:#FBF8F1;color:var(--shell);border-color:#FBF8F1}
.btn-block{width:100%}
.chip{display:inline-flex;align-items:center;background:rgba(233,185,73,.16);border:1px solid rgba(233,185,73,.55);color:#8A6520;font-size:12.5px;font-weight:700;padding:4px 11px;border-radius:999px}
.chip--shell{background:rgba(47,70,52,.08);border-color:rgba(47,70,52,.24);color:var(--shell)}
.chip--gold{background:var(--dy);border-color:var(--dy-dark);color:#211D17}

/* ---------- header ---------- */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(251,248,241,.94);
 backdrop-filter:blur(10px);
 border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px;position:relative}
.brand{display:inline-flex;align-items:center;gap:11px;font-size:20px;font-weight:800;color:var(--shell);letter-spacing:.01em}
.brand:hover{color:var(--shell)}
.brand-mark{display:inline-flex;width:38px;height:38px;flex:0 0 auto}
.brand-text small{display:block;font-size:11.5px;font-weight:600;color:var(--spine);letter-spacing:.16em;line-height:1.2}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-menu a{
 display:inline-flex;align-items:center;min-height:44px;padding:0 13px;
 font-size:15.5px;font-weight:600;color:var(--muted);border-radius:10px;
 transition:color .2s ease,background .2s ease;
}
.nav-menu a:hover{color:var(--shell);background:rgba(47,70,52,.06)}
.nav-menu a.is-active{color:var(--shell);background:rgba(233,185,73,.22);font-weight:800}
.nav-cta{display:inline-flex;align-items:center}
.nav-toggle{
 display:none;width:46px;height:46px;border:1px solid rgba(47,70,52,.28);border-radius:12px;
 background:#fff;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--shell);border-radius:2px;transition:.24s}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- category header band ---------- */
.cathero{
 position:relative;overflow:hidden;color:#FBF8F1;
 min-height:236px;display:flex;align-items:flex-end;
 background:var(--shell);
}
.cathero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.jpg');background-size:cover;background-position:center 34%}
.cathero-veil{position:absolute;inset:0;background:linear-gradient(96deg,rgba(20,32,22,.94) 0%,rgba(20,32,22,.86) 48%,rgba(20,32,22,.58) 100%)}
.cathero-inner{position:relative;padding:34px 0 38px;width:100%}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(244,239,227,.68);min-height:28px}
.crumb a{color:rgba(244,239,227,.8)}
.crumb a:hover{color:var(--dy)}
.crumb .sep{opacity:.5}
.crumb .current{color:var(--dy);font-weight:700}
.cathero h1{
 font-size:clamp(28px,3.9vw,44px);font-weight:800;color:#fff;
 margin:18px 0 12px;padding-left:18px;border-left:4px solid var(--dy);
 max-width:920px;
}
.cathero .catlead{font-size:16.5px;color:rgba(251,248,241,.86);max-width:760px;padding-left:22px}
.cathero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;padding-left:22px}

/* ---------- metric strip ---------- */
.metric-strip{background:var(--bg);padding:34px 0 6px}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.metric-card{
 background:var(--card);border:1px solid rgba(47,70,52,.16);border-radius:var(--r-md);
 padding:18px 20px 16px;position:relative;overflow:hidden;box-shadow:var(--sh);
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.metric-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--dy)}
.metric-card:nth-child(even)::before{background:var(--shell)}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:rgba(233,185,73,.7)}
.metric-num{font-size:30px;font-weight:800;color:var(--shell);font-variant-numeric:tabular-nums;line-height:1.1}
.metric-num small{font-size:15px;font-weight:700;margin-left:4px;color:var(--spine)}
.metric-label{font-size:14px;color:var(--muted);margin-top:6px}

/* ---------- filter tabs ---------- */
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;margin-bottom:26px}
.filter-tabs{display:flex;flex-wrap:wrap;gap:8px;border:0;background:transparent;margin:0}
.filter-tabs .tabs-title{float:none;margin:0}
.filter-tabs .tabs-title>a{
 display:inline-flex;align-items:center;min-height:44px;padding:0 18px;margin:0;
 font-size:15px;font-weight:700;color:var(--muted);background:#fff;
 border:1px solid var(--line);border-radius:999px;transition:.2s ease;
}
.filter-tabs .tabs-title>a:hover{color:var(--shell);border-color:rgba(47,70,52,.4)}
.filter-tabs .tabs-title>a[aria-selected="true"]{background:var(--dy);border-color:var(--dy-dark);color:#211D17}
.filter-note{font-size:14px;color:var(--muted)}
.tabs-content{margin:0;border:0}
.tabs-panel{padding:0}
.tabs-panel[aria-hidden="true"]{display:none}

/* ---------- video cards ---------- */
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.v-card{
 background:var(--card);border:1px solid rgba(47,70,52,.16);border-radius:var(--r-lg);
 overflow:hidden;display:flex;flex-direction:column;position:relative;
 box-shadow:var(--sh);transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.v-card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--dy);z-index:2}
.v-card:nth-child(3n+2)::before{background:var(--shell)}
.v-card:nth-child(3n)::before{background:var(--flesh)}
.v-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:rgba(233,185,73,.85)}
.v-thumb{position:relative;aspect-ratio:16/9;background:#F1EBDD;overflow:hidden}
.v-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.v-card:hover .v-thumb img{transform:scale(1.04)}
.v-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.v-tags{display:flex;flex-wrap:wrap;gap:8px}
.v-card h3{font-size:19px;font-weight:800;line-height:1.42}
.v-card h3 a{color:var(--text)}
.v-card h3 a:hover{color:var(--flesh)}
.v-card p{font-size:15px;color:var(--muted);line-height:1.72;
 display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.v-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
 font-size:13.5px;color:var(--spine);border-top:1px solid var(--line);padding-top:12px}
.v-meta .dur{font-variant-numeric:tabular-nums;font-weight:700;color:var(--flesh)}
.more-row{display:flex;justify-content:center;margin-top:34px}

/* ---------- hot list / topic list ---------- */
.rank-mini{display:flex;flex-direction:column;gap:2px}
.rank-mini li{display:flex;gap:18px;align-items:flex-start;padding:16px 18px;border-radius:var(--r-md);
 background:#fff;border:1px solid var(--line);transition:.2s ease;margin-bottom:10px}
.rank-mini li:hover{background:#FBF6E8}
.rank-mini .num{font-size:28px;font-weight:800;color:var(--dy);font-variant-numeric:tabular-nums;line-height:1.1;min-width:44px}
.rank-mini h3{font-size:17px;font-weight:800;margin-bottom:4px}
.rank-mini span{font-size:14px;color:var(--muted)}
.topic-cloud{display:flex;flex-wrap:wrap;gap:10px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:24px}
.topic-cloud .chip{font-size:14px;padding:8px 16px;cursor:default}

/* ---------- ranking board ---------- */
.rank-board{background:var(--shell);color:#F4EFE3}
.rank-track{display:grid;grid-template-columns:repeat(5,minmax(200px,1fr));gap:18px;overflow-x:auto;padding-bottom:8px;scroll-snap-type:x mandatory}
.rank-item{
 scroll-snap-align:start;background:rgba(251,248,241,.06);border:1px solid rgba(251,248,241,.16);
 border-radius:var(--r-lg);padding:20px;min-width:200px;
 transition:background .22s ease,border-color .22s ease,transform .22s ease;
}
.rank-item:hover{background:rgba(251,248,241,.1);border-color:rgba(233,185,73,.65);transform:translateY(-4px)}
.rank-item .num{font-size:36px;font-weight:800;color:var(--dy);font-variant-numeric:tabular-nums;line-height:1}
.rank-item h3{font-size:17px;font-weight:800;color:#fff;margin:12px 0 8px}
.rank-item p{font-size:14px;color:rgba(244,239,227,.72)}

/* ---------- guide ---------- */
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.guide-card{
 background:var(--card);border:1px solid rgba(47,70,52,.16);border-left:4px solid var(--flesh);
 border-radius:var(--r-md);padding:22px 22px 20px;box-shadow:var(--sh);
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.guide-card:nth-child(2){border-left-color:var(--dy)}
.guide-card:nth-child(3){border-left-color:var(--shell)}
.guide-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h)}
.guide-card h3{font-size:19px;font-weight:800;margin-bottom:10px}
.guide-card p{font-size:15.5px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;margin:0 auto}
.accordion{background:transparent;border:0;margin:0}
.accordion-item{border:1px solid var(--line);border-radius:var(--r-md);background:#fff;overflow:hidden;margin-bottom:12px;box-shadow:0 1px 2px rgba(33,29,23,.05)}
.accordion-item.is-active{border-color:rgba(233,185,73,.85)}
.accordion-title{
 display:flex;align-items:center;gap:14px;min-height:52px;padding:16px 22px;
 font-size:16.5px;font-weight:700;color:var(--text);background:#fff;border:0;
 transition:background .2s ease,color .2s ease;
}
.accordion-title:hover{background:#FBF6E8;color:var(--shell)}
.accordion-title::before{
 content:"";position:static;order:-1;flex:0 0 auto;
 width:9px;height:9px;background:var(--dy);border-radius:2px;transform:rotate(45deg);margin:0;
}
.accordion-item.is-active .accordion-title::before{background:var(--flesh)}
.accordion-content{border:0;background:#fff;padding:0 22px 20px 45px;color:var(--muted);font-size:15.5px;line-height:1.78}
.accordion-content p{margin:0}

/* ---------- subscribe CTA ---------- */
.sub-band{background:var(--shell);color:#F4EFE3;padding:56px 0}
.sub-inner{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:36px;align-items:center}
.sub-inner h2{font-size:clamp(23px,2.6vw,30px);color:#fff;margin-bottom:10px}
.sub-inner p{color:rgba(244,239,227,.78);font-size:15.5px}
.sub-form{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.sub-form input[type="email"]{
 flex:1 1 240px;min-height:48px;padding:0 16px;border-radius:12px;
 border:1px solid rgba(251,248,241,.32);background:rgba(251,248,241,.1);color:#fff;
 transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.sub-form input[type="email"]::placeholder{color:rgba(244,239,227,.6)}
.sub-form input[type="email"]:focus{outline:none;border-color:var(--dy);background:rgba(251,248,241,.16);box-shadow:0 0 0 3px rgba(233,185,73,.28)}
.sub-msg{margin-top:12px;font-size:14.5px;color:var(--dy);min-height:22px}

/* ---------- footer ---------- */
.site-footer{background:var(--shell);color:#F4EFE3;padding:72px 0 0;margin-top:0}
.site-footer .grid-margin-x{margin-left:-0.9375rem;margin-right:-0.9375rem}
.footer-brand p{color:rgba(244,239,227,.76);margin-top:16px;font-size:15.5px;max-width:420px}
.footer-col h4{font-size:16px;color:#fff;margin:0 0 14px;font-weight:800}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a{color:rgba(244,239,227,.82);font-size:15px;border-bottom:1px solid transparent;transition:.2s ease}
.footer-col a:hover{color:var(--dy);border-bottom-color:var(--dy)}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;margin-top:56px;padding:20px 0;border-top:1px solid rgba(244,239,227,.16);font-size:14px;color:rgba(244,239,227,.66)}
.footer-bottom a{color:rgba(244,239,227,.82)}
.footer-bottom a:hover{color:var(--dy)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
 :root{--sec:64px}
 .nav-menu{
  position:absolute;top:100%;left:-24px;right:-24px;display:none;flex-direction:column;align-items:stretch;
  gap:2px;background:#fff;padding:14px 24px 22px;border-bottom:1px solid var(--line);box-shadow:var(--sh-h);
 }
 .nav-menu.is-open{display:flex}
 .nav-menu a{padding:14px 12px;justify-content:flex-start;font-size:16.5px;border-radius:12px}
 .nav-toggle{display:inline-flex}
 .nav-cta{display:none}
 .video-grid{grid-template-columns:repeat(2,1fr)}
 .metric-grid{grid-template-columns:repeat(3,1fr)}
 .guide-grid{grid-template-columns:1fr 1fr}
 .sub-inner{grid-template-columns:1fr;gap:22px}
 .rank-track{grid-template-columns:repeat(5,minmax(210px,1fr))}
}
@media (max-width:768px){
 .container{padding:0 16px}
 .cathero h1{padding-left:14px}
 .cathero .catlead,.cathero-actions{padding-left:14px}
 .metric-grid{grid-template-columns:repeat(2,1fr);gap:14px}
 .guide-grid{grid-template-columns:1fr}
 .footer-brand p{max-width:none}
 .footer-bottom{margin-top:40px}
}
@media (max-width:640px){
 :root{--sec:48px}
 .section--tight{padding:48px 0}
 .video-grid{grid-template-columns:1fr}
 .filter-tabs{width:100%}
 .filter-tabs .tabs-title{flex:1 1 auto}
 .filter-tabs .tabs-title>a{width:100%;justify-content:center}
 .metric-num{font-size:25px}
 .cathero{min-height:auto}
 .rank-track{grid-template-columns:repeat(5,minmax(180px,1fr))}
 .sub-form input[type="email"]{flex:1 1 100%}
 .sub-form .btn{width:100%}
}